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Atkins & de Paula: Elements of Physical Chemistry 5e
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The vapour pressure p of liquid sulfur trioxide, SO3, may be calculated for different temperatures T using the expression where, for the temperature range 24 to 48°C, A = 9.147 and B = 1771 K. What is the vapour pressure of liquid sulfur trioxide at 32°C?
The vapour pressure of toluene is 6.811 kPa at 310 K and 24.15 kPa at 340 K. Assuming that the variation of the vapour pressure p with temperature T may be described by the expression What are the values of A and B?
The standard enthalpy of vaporization of water, H2O, ΔvapH° = 40.7 kJ mol-1 at 373 K. Assuming this value to remain constant at temperatures close to 373 K, use the Clausius-Clapeyron equation to estimate the vapour pressure of liquid water at 80°C.
The vapour pressure of liquid carbon disulfide, CS2, is 23.5 kPa at 280 K and 51.3 kPa at 300 K. Calculate the enthalpy of vaporization of carbon disulfide at 290 K.
The triple point of acetylene, C2H2, lies at a temperature of 192.4 K and pressure of 128 kPa. Assuming that the enthalpy of vaporization of acetylene, ΔvapH = 31.3 kJ mol-1, is invariant with temperature, calculate the normal boiling temperature.
The standard molar entropy of but-1-ene, C4H8, is 307 J K-1 mol-1. What is the change in the molar Gibbs energy of but-1-ene when it is heated from 293 K to 303 K?
Calculate the change in the molar Gibbs energy of a perfect gas when it is compressed isothermally at a temperature of 298 K from a pressure of 1 MPa to 5 MPa.
On a pressure-temperature phase diagram, the conditions under which a one-component system exists as two phases in equilibrium corresponds to:
The vapour pressure of acetone, C3H6O, is 30.6 kPa at 298 K. The normal boiling of acetone is at 329 K. Calculate the average enthalpy of vaporization of acetone over this temperature range.
Mercury has a molar mass of 200.6 g mol-1 and a density of 13.6 g cm-3 when liquid. Calculate the change in the molar Gibbs energy of liquid mercury when the pressure increases by 10.0 bar.
